Lately our satellite TV picture was always breaking up into little squares, often with a message that the signal was absent or weak. I thought it might be the weather but eventually we called in the aerial specialists. Simple problem with a simple solution - trees had grown and were blocking the signal to the satellite dish. Solution was to move the dish, actually fit a new dish further along the wall where there was a good signal. One task still to be done is to get somebody in to trim a few branches on the trees to prevent them growing and blocking out the signal again.
TV reception is now fine, all are happy.
Insanity: doing the same thing over and over again and expecting different results. [Albert Einstein]
Nil Satis Nisi Optimum